Changes made when editing a dashboard are saved along the way and cannot be undone. If you want to test a layout on a dashboard without changing the dashboard permanently, you can duplicate the dashboard and edit the duplicate.
Instructions
1. Go to the Dashboard overview.
2. Click the name of the dashboard you want to duplicate.
Tip: You can also duplicate a dashboard by clicking 
in the Options column.
3. Click Edit Dashboard.
4. To duplicate the dashboard, click Duplicate Dashboard at the top of the page. You are asked if you are sure you want to duplicate the dashboard. Click OK to continue.
5. When a dashboard is duplicated, the dashboard`s name is the same as the original with (Copy) at the end. Click Edit basic data to edit the name of the dashboard.
6. Edit the name and other basic data if you wish. When you are finished editing, Click Save and close form.
Info: By saving and closing the form, the dashboard is displayed and you can edit layout and content on the dashboard.